Remove has_DT_SYMBOLIC flag

  From the elf-spec: "Symbolically bound shared objects are
  identified by the .dynamic entry DT_SYMBOLIC. This tag is
  informational only; the runtime linker processes symbol
  lookups from these objects in the same manner as any
  other object."

Change-Id: I4aae0e502ed9fac096fbf076f4d6b2e055d784f6